[Mspgcc-users] Possible bug or poor optimisation?

[Ricardo Wiggers]

Hi!

I think both of the lines below should create the same code, but it's 
not what can I'm seing. Below is an extract of a .lst file. It's 
compiled with the win build 20030506. and compiler options 
"-mmcu=msp430x1232 -O2 -Wall -g"

Thanks,
Ricardo.


   U0IFG &= (!0x02);//UTXIFG0;
   e402:    5f 42 03 00     mov.b    &0x0003,r15    ;0x0003
   e406:    c2 43 03 00     mov.b    #0,    &0x0003    ;r3 As==00

   U0IFG &= 0xFD;
   e3ea:    e2 c3 03 00     bic.b    #2,    &0x0003    ;r3 As==10